JPH0220848B2 - - Google Patents

Info

Publication number
JPH0220848B2
JPH0220848B2 JP59191582A JP19158284A JPH0220848B2 JP H0220848 B2 JPH0220848 B2 JP H0220848B2 JP 59191582 A JP59191582 A JP 59191582A JP 19158284 A JP19158284 A JP 19158284A JP H0220848 B2 JPH0220848 B2 JP H0220848B2
Authority
JP
Japan
Prior art keywords
hydraulic
contamination
rate
value
change
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP59191582A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6170208A (ja
Inventor
Keiichiro Uno
Shuichi Ichama
Yukio Aoyanagi
Masaki Kanehara
Tomohiko Yasuda
Hajime Yasuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP59191582A priority Critical patent/JPS6170208A/ja
Publication of JPS6170208A publication Critical patent/JPS6170208A/ja
Publication of JPH0220848B2 publication Critical patent/JPH0220848B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
JP59191582A 1984-09-14 1984-09-14 油圧回路の異常状態検出装置 Granted JPS6170208A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59191582A JPS6170208A (ja) 1984-09-14 1984-09-14 油圧回路の異常状態検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59191582A JPS6170208A (ja) 1984-09-14 1984-09-14 油圧回路の異常状態検出装置

Publications (2)

Publication Number Publication Date
JPS6170208A JPS6170208A (ja) 1986-04-11
JPH0220848B2 true JPH0220848B2 (enExample) 1990-05-10

Family

ID=16277046

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59191582A Granted JPS6170208A (ja) 1984-09-14 1984-09-14 油圧回路の異常状態検出装置

Country Status (1)

Country Link
JP (1) JPS6170208A (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0611376A (ja) * 1992-06-26 1994-01-21 Komatsu Ltd 油圧回路の金属粉量検出装置
US5696331A (en) * 1992-06-26 1997-12-09 Kabushiki Kaisha Komatsu Seisakusho Apparatus for detecting metal powder amount in hydraulic circuit
JP6234359B2 (ja) * 2014-12-15 2017-11-22 日立建機株式会社 作業機械のオイル性状の診断システム

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5598358A (en) * 1979-01-20 1980-07-26 Nippon Kenki Service:Kk Aging change expectration method of metal concentration in oil
JPS58201047A (ja) * 1982-05-20 1983-11-22 Caterpillar Mitsubishi Ltd 故障診断システムの判定方法

Also Published As

Publication number Publication date
JPS6170208A (ja) 1986-04-11

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